package com.example.calender.widget;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.os.CountDownTimer;
import android.util.AttributeSet;
import android.view.View;

import com.example.calender.R;


public class CountDownView extends View {
    private static final String TAG = "CountDownView";
    //圆轮颜色
    private int mRingColor;
    //圆轮宽度
    private float mRingWidth;
    //圆轮进度值文本大小
    private int mRingProgessTextSize;
    //宽度
    private int mWidth;
    //高度
    private int mHeight;
    private Paint mPaint;
    //圆环的矩形区域
    private RectF mRectF;
    //
    private int mProgessTextColor;
    private int mCountdownTime;
    private float mCurrentProgress;
    private OnCountDownFinishListener mListener;


    public CountDownView(Context context) {
        this(context, null);
    }

    public CountDownView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CountDownView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CountDownView);
        mRingColor = a.getColor(R.styleable.CountDownView_ringColor, context.getResources().getColor(R.color.colorAccent));
        mRingWidth = a.getFloat(R.styleable.CountDownView_ringWidth, 8);
        mRingProgessTextSize = a.getDimensionPixelSize(R.styleable.CountDownView_progressTextSize, 40);
        mProgessTextColor = a.getColor(R.styleable.CountDownView_progressTextColor, context.getResources().getColor(R.color.colorAccent));
        mCountdownTime = a.getInteger(R.styleable.CountDownView_countdownTime, 15);
        a.recycle();
        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        mPaint.setAntiAlias(true);
        this.setWillNotDraw(false);
    }

    public void setCountdownTime(int mCountdownTime) {
        this.mCountdownTime = mCountdownTime;
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
        mWidth = getMeasuredWidth();
        mHeight = getMeasuredHeight();
        mRectF = new RectF(0 + mRingWidth / 2, 0 + mRingWidth / 2,
                mWidth - mRingWidth / 2, mHeight - mRingWidth / 2);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
/**
 *圆环
 */
//颜色
        mPaint.setColor(mRingColor);
//空心
        mPaint.setStyle(Paint.Style.STROKE);
//宽度
        mPaint.setStrokeWidth(mRingWidth);

        canvas.drawArc(mRectF, -90, -(mCurrentProgress/15)*360, false, mPaint);
//绘制文本
        Paint textPaint = new Paint();
        textPaint.setAntiAlias(true);
        textPaint.setTextAlign(Paint.Align.CENTER);
        String text = ((int)mCurrentProgress)+"";
        textPaint.setTextSize(mRingProgessTextSize);
        textPaint.setColor(mProgessTextColor);

//文字居中显示
        Paint.FontMetricsInt fontMetrics = textPaint.getFontMetricsInt();
        int baseline = (int) ((mRectF.bottom + mRectF.top - fontMetrics.bottom - fontMetrics.top) / 2);
        canvas.drawText(text, mRectF.centerX(), baseline, textPaint);
    }

    /**
     * 开始倒计时
     */
    public void startCountDown() {
        setClickable(false);
        CountDownTimer timer = new CountDownTimer(mCountdownTime*1000, 100) {
            @Override
            public void onTick(long millisUntilFinished) {
                mCurrentProgress = mCountdownTime-millisUntilFinished/1000;
                invalidate();
            }

            @Override
            public void onFinish() {
                setClickable(true);
            }
        };
        timer.start();
    }
    public void setAddCountDownListener(OnCountDownFinishListener mListener) {
        this.mListener = mListener;
    }
    public interface OnCountDownFinishListener {
        void countDownFinished();
    }


}
